What is CVE-2016-1843?

CVE-2016-1843 is a high-severity vulnerability in Apple Mac OS X, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2016-05-20.

How severe is CVE-2016-1843?

High severity. CVSS v3 base score is 7.5 out of 10.

Improper input validation in Apple Mac OS X

CVE-2016-1843

The Messages component in Apple OS X before 10.11.5 mishandles filename encoding, which allows remote attackers to obtain sensitive information via unspecified vectors.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2016-05-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.025 (84.3th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000

Affected products

Apple Mac OS X

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

support.apple.com/HT206567 (Vendor Advisory)
lists.apple.com/archives/security-announce/2016/May/msg00004.html (vendor-advisory, Vendor Advisory)
www.securityfocus.com/bid/90696 (VDB Entry, Third Party Advisory, vdb-entry)
www.securitytracker.com/id/1035895 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2016-1843?: CVE-2016-1843 is a high-severity vulnerability in Apple Mac OS X, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2016-05-20.
How severe is CVE-2016-1843?: High severity. CVSS v3 base score is 7.5 out of 10.